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Fetal Length Calculator

calculate fetal length for free

* Femur Length (FL) - Measures the longest bone in the body and reflects the longitudinal growth of the fetus. It increases from about 1.5 cm at 14 weeks to about 7.8 cm at term.

Femur length (FL) : mm

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You had an ultrasound, but your doctor did not tell you how long your baby is? Don’t worry, by using our Fetal Length Calculator, you can find out that information by yourself.

How to use the Fetal Length Calculator?

Calculating of fetal length is very simple with our Fetal Length Calculator. Just look at the ultrasound report that you get from the doctor. There are some measurements marked with AC, FL, BPD, HC. In order to calculate fetal length, you will need only the FL measurement, which represents the length of the femur. Enter the FL measurement in the highlighted box above and then get the length of your baby.

The Recommendation

In order to find out whether the length of your baby is in line with the average length of a baby in the same gestation week, see The Fetal Growth Chart


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